Question 
tet the salary of wooker be ( x ) "
10) deduckd for houserent = 0.1x
15% of rest on childrens = (0.15)( (0.9 x) )
[
begin{array}{l}
text { 10% on his clothes = } begin{array}{c}
0.135 x
0.12(0.765 x]
end{array}
text { Remained }=frac{51377}{0.0765}
-0.1 x-(0.15)(0.971)-0.1 x=1377
end{array}
]
After hous rent remained falance ( =0.9 x )
[
begin{aligned}
text { Affor children's education } &=0.9 x-0.135 %
&=0.765 y
end{aligned}
]
Aster cloming
[
begin{array}{l}
=0.765 times-0.0765
=0.6885 mathrm{y}
end{array}
]
ne remained
[
begin{array}{c}
text { remained with } 2137+
0.6885 x=31377
x=72000
end{array}
] 
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28. From the salary of a worker, 10% is deducted as house rent, 15% of the rest he spends on children's education and 10% of the balance, he spends on clothes. After this expenditure, he is left with * 1377. His salary is (1) 2000 (2) 2040 (3) 2100 (4) * 2200
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